Publication detail
The impact of surface and geometry on coefficient of friction of artificial hip joints
CHOUDHURY, D. VRBKA, M. MAMAT, A.B. STAVNESS, I. ROY, CH.K. MOOTANAH, R. KŘUPKA, I.
English title
The impact of surface and geometry on coefficient of friction of artificial hip joints
Type
WoS Article
Language
en
Original abstract
Coefficient of friction (COF) tests were conducted on 28-mm and 36-mm-diameter hip joint prostheses for four different material combinations, with or without the presence of Ultra High Molecular Weight Polyethylene (UHMWPE) particles using a novel pendulum hip simulator. The effects of three micro dimpled arrays on femoral head against a polyethylene and a metallic cup were also investigated. Clearance played a vital role in the COF of ceramic on polyethylene and ceramic on ceramic artificial hip joints. Micro dimpled metallic femoral heads yielded higher COF against a polyethylene cup; however, with metal on metal prostheses the dimpled arrays significantly reduced the COF. In situ images revealed evidence that the dimple arrays enhanced film formation, which was the main mechanism that contributed to reduced friction.
Keywords in English
Hip joint prosthesis; micro dimple; Coefficient of friction; Lubrication film formation; Size and clearance
Released
2017-08-01
Publisher
Elsevier
Location
Amsterdam, The Netherlands
ISSN
1751-6161
Journal
Journal of the Mechanical Behavior of Biomedical Materials
Volume
72
Number
8
Pages from–to
192–199
Pages count
8
BIBTEX
@article{BUT137567,
author="CHOUDHURY, D. and VRBKA, M. and MAMAT, A.B. and STAVNESS, I. and ROY, CH.K. and MOOTANAH, R. and KŘUPKA, I.",
title="The impact of surface and geometry on coefficient of friction of artificial hip joints",
journal="Journal of the Mechanical Behavior of Biomedical Materials",
year="2017",
volume="72",
number="8",
pages="192--199",
doi="10.1016/j.jmbbm.2017.05.011",
issn="1751-6161",
url="http://www.sciencedirect.com/science/article/pii/S1751616117301996"
}